ssgl
LearnOpenGL
ssgl | LearnOpenGL | |
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13 | 624 | |
68 | 10,261 | |
- | - | |
2.1 | 3.8 | |
5 months ago | 13 days ago | |
C | C++ | |
MIT License | GNU General Public License v3.0 or later |
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ssgl
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[2023 Day 8 (Part 2)] [Dart] Is it normal that the code takes ages to run?
It's here. I made a post about it too, there's some details in the comments on how this works.
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[2023 Day 5 (Part 2)] [GLSL] If brute force doesn't work, you aren't using enough
Here I'm doing GLSL and running it via OpenGL on top of my own helper library (the main branch of the code repo explains it pretty well). For me it's the easiest way to code for a GPU by a wide margin, but I guess that's to be expected. For performance, the most important things here are using shared memory and persistent threads so there are less global reads and especially atomics (I wanted to do a local reduction on the end result but for whatever reason subgroup operations don't work on 64-bit integers and I didn't bother to write it out with shared memory)
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Why there aren't graphics APIs designed to be source compatible with the CPU side like CUDA?
Some of it is fine-grained control, some is how it’s nice to be able to treat shaders as separate entities, some is just different preference. But no actual limitation, in fact I built a thing for that on top of OpenGL.
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Why aren't there constantly more shading languages popping up all the time like other languages?
Include is probably your best bet there. Personally I use this system that I made, which borrows the single source programming model from CUDA so that shaders are just reinterpreted C++ code that can sit within the rest of the program. This means I can call the same functions from C++ and the shaders, and includes work just like any other includes.
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What are the best C++ talks that one should watch?
I also already have a library that gives compile time errors, by having the shaders just be a part of the C++ program :) This would also benefit slightly from having embedded files, as I wouldn't need to do the runtime hacks that are currently in place.
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Automatically selecting fragment shaders in a pipeline DSL based on vertex shader and bound samplers - good or bad idea?
As a side note, you may be interested in this library that someone posted on /r/GraphicsProgramming awhile ago. Haven't used it, but it seems like it might fit in with your general design philosophy.
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True story right now
Because mine is the most faithful reproduction of GLSL I've seen. Almost all features work the same in C++ as they do in shaders -- the notable difference is that you can't pass swizzles by reference, and inout arguments have to be defined with a slightly wonky syntax.
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Low-level OpenGL abstractions
The culmination of my attempts at wrapping OpenGL is ssgl, which foregoes basically all binding and lets you write shaders along C++ with semi-automatic lambda capture. The underlying implementation is filled with dragons, but from personal experience it's just bonkers how much nicer it is to work with compared to any other approach I've used.
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A simple way to enforce (standard) header include order?
I have a library that due to its nature (it defines a domain-specific language within C++) has to define macros for a bunch of words that some standard headers use as variable names. This causes the standard headers to completely break if my library headers are included before them, and the errors are less than intuitive. Is there a simple way to produce a meaningful error (like "library header must be included last") if a standard header is included after the library headers? Googling didn't help much, and at a quick glance standard headers don't appear to contain too many extremely common names that I could #define to static_assert or something. I'm fine with the sensible error being limited to a few of the big standard implementations, so the option of just going through the headers and finding enough such names is doable, but it'd be nice to have a cleaner solution.
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Learning OpenGL
Yeah, the state machine aspect does make debugging cumbersome, and it's very easy to forget some option in the wrong setting. But I don't fully agree with "a collection of spells", I think the steps to achieve something are (mostly) pretty straight forward. Though maybe memories go sweeter with time, I haven't written any binding code after making ssgl :-)
LearnOpenGL
- Learn OpenGL eBook
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LearnD3D11, a guide aimed at anyone trying to learn Direct3D11
Also recommended: LearnOpenGL [1] and Vulkan Guide [2]
[1]: https://learnopengl.com/
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Making Small Games, Which Is Fun in Itself
I want to begin game development as a hobby, but I'm unsure where to start. I did follow through https://learnopengl.com/ a few years ago, and while it was a very interesting experience, I imagine I would need to use an existing engine to be productive.
Do you recommend any books and tutorials aimed at experienced programmers with 0 knowledge of game development/design?
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Is there space in this field for extreme cases like mine ?
- Game development - Unity3D project based learning in C#: https://learn.unity.com/ - Graphics - There was another user on r/GraphicsProgramming the other day (who teaches Computer Graphics at his university) that linked their lecture series for the entry year of their course here: https://tamats.com/learn/realtime-graphics/ - Project based learning: https://github.com/ssloy/tinyrenderer/wiki - Rendering API tutorials: https://vulkan-tutorial.com/, https://learnopengl.com/
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Where do I start to learn C++ for a game development
If u want to make 3D game, you'll probably want to learn some 3D shader graphic stuff. OpenGL is a good start. https://learnopengl.com
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Ask HN: Learn Graphics Programming, Recommendations?
LearnOpenGl.com
Possibly a smidge outdated.
Goes from blank window to rendering 3d meshes with advanced lighting techniques (HDR, SSAO and more).
Heped me understand shader pipeline, so I recommend it.
https://learnopengl.com
- I’m Bored AF!
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Looking to get started
and then https://learnopengl.com/
- Ajutor in privinta incercarii a face un joc
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Is a bounding volume a mesh? (for visualization)
I'm reading the guest article about frustum culling on learnopengl.com and there's a video demonstrating how it works and for debug purposes they have a bunch of spheres turning red or green which I assume means they're being culled or not so my question is if I wanted to do this do I have to make a mesh for whatever bounding volume shape or is there a specific method for something like this?
What are some alternatives?
slang - Making it easier to work with shaders
raylib - A simple and easy-to-use library to enjoy videogames programming
Wisdom-Shaders - A Minecraft shaderspack. Offers high performance with high quality at the same time.
bgfx - Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.
SPIRV-Cross - SPIRV-Cross is a practical tool and library for performing reflection on SPIR-V and disassembling SPIR-V back to high level languages.
imgui - Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies
SDL_shader_tools - Shader compiler and tools for SDLSL (Simple Directmedia Layer Shader Language)
sokol - minimal cross-platform standalone C headers
SHADERed - Lightweight, cross-platform & full-featured shader IDE
bevy - A refreshingly simple data-driven game engine built in Rust
Fwog - Froggy OpenGL Engoodener
SFML - Simple and Fast Multimedia Library